TWM572563U - Wire assambly and cable using the same - Google Patents

Abstract

A signal conductor pair includes a pair of signal wires, a metal foil covering the signal wires, a shield covering the metal foil, and a cover covering the shield. The signal wires include a signal conductor and an insulation body covering the signal conductor, the metal foil spirally or longitudinally covering the signal wires, and the insertion loss test of the signal conductor pair can reach 40 GHz.

Description

Core group and cable using the core group

The present invention relates to a core group and a cable using the core group, and more particularly to a high speed signal cable for transmitting high frequency signals.

With the development of electronic technology products, high-speed signal cables are widely used as a means of transmitting signals for the connection of electronic devices such as home appliances, instrumentation, power tools and automation equipment. However, in the signal transmission process, especially in the high-frequency signal transmission process, the cable is extremely susceptible to interference from external electromagnetic signals. Therefore, it is often necessary to adopt a shielding structure design to eliminate or reduce external electromagnetic field interference, and at the same time, to prevent transmission of signals. leakage.

Therefore, it is necessary to provide a new type of shielded cable with strong anti-electromagnetic interference performance, stable signal transmission, reliability and simple manufacture.

The main purpose of this creation is to provide a high-speed signal cable that uses a completely enclosed shielding structure to improve the shielding against electromagnetic interference, thereby ensuring the reliability of signal transmission.

In order to achieve the above object, the present invention adopts the following technical solutions: a core group including a signal line, a metal foil covering the signal line, a shielding layer covering the metal foil, and a sheath covering the shielding layer. The signal line includes a signal line conductor and an insulating layer covering the signal line conductor. The metal foil is spirally wound or longitudinally covered with the signal line, and the insertion loss test frequency of the core group is up to 40 GHz.

In order to achieve the above object, the present invention may adopt the following technical solution: a cable comprising a plurality of the core sets, a fixed layer wrapped on an outer side of the core set, and an outer shield wrapped on an outer side of the fixed layer, And a cable sleeve covering the outer shielding layer, a pair of the core groups are stacked in a fixed layer, and the insertion loss test frequency of the cable is up to 40 GHz.

Compared with the prior art, the creation has the following beneficial effects: the high-performance signal cable has improved electrical characteristics, and has a high-speed data transmission capability of a signal frequency greater than 20 GHz. The shielding layer completely covers the insulating layer, so that the signal line conductor of the signal line is protected from external electromagnetic interference when transmitting signals, and the signal leakage on the signal line conductor can be prevented, thereby ensuring the reliability of signal transmission.

Referring to the first figure, an embodiment of the core group 1 is created. The core group 1 is provided with a signal line 11 , a metal foil 12 covering the signal line 11 , a shielding layer 13 covering the metal foil 12 , and a sheath 14 covering the shielding layer 13 in this order from the center. The distance between the two shield layers wound on the signal line 11 is called the pitch. The smaller the pitch, the tighter the winding, and the electromagnetic shielding performance can be improved by changing the pitch. The metal foil 12 is spirally wound or longitudinally covered with the signal line 11. The signal line 11 includes a signal line conductor 111 and an insulating layer 112. The signal line conductor 111 is made of a silver plated copper conductor for transmitting high frequency signals. The insulating layer 112 encloses the signal line conductor 111 to separate the signal line conductor 111 from the outside. As shown in the fourth figure, the core group 1 has an insertion loss test frequency of up to 40 GHz and has no suction effect.

Based on the foregoing embodiment, a first embodiment of the present authoring cable 2 is proposed. The cable 2 includes the core group 21 of the foregoing embodiment, the fixing layer 22 covering the core group 21, the outer shielding layer 23 covering the fixing layer 22, and the cable covering the outer shielding layer. Set of 24. The core group 21 is provided with a signal line 211, a metal foil 212 covering the signal line 211, a shielding layer 213 covering the metal foil 212, and a sheath 214 covering the shielding layer 213 in this order from the center. The metal foil 212 is spirally wound or longitudinally covered with the signal line 211. The signal line 211 includes a signal line conductor 2111 and an insulating layer 2112 covering the signal line conductor 2111. The signal line conductor 2111 is made of a silver plated copper conductor for transmitting high frequency signals. The cable 2 has an insertion loss test frequency of up to 40 GHz and has no suction effect.

Based on the foregoing embodiment, a second embodiment of the present authoring cable 3 is proposed. The cable 3 includes the core group 31 of the foregoing embodiment, a fixing layer 32 covering the core group 31, a plurality of the core groups 31 arranged around the outer side of the fixing layer 32, and a wraparound arrangement. The outer fixing layer 33 of the core group 31 covers the outer shield layer 34 of the outer fixing layer 33 and the cable sleeve 35 covering the outer shield layer 34. The plurality of core groups 31 in the fixed layer 32 are stacked. The core group 31 is provided with a signal line 311, a metal foil 312 covering the signal line 311, a shielding layer 313 covering the metal foil 312, and a sheath 314 covering the shielding layer 313. The metal foil 312 is spirally wound or longitudinally covered with the signal line 311. The signal line 311 includes a signal line conductor 3111 and an insulating layer 3112 covering the signal line conductor 3111. The signal line conductor 3111 is made of a silver plated copper conductor for transmitting high frequency signals, and the cable 3 has an insertion loss test frequency of up to 40 GHz and has no suction effect.

It will be understood, however, that the present invention has been described in terms of numerous features and features, and is in The shape, size and arrangement of the components within the scope of the principles indicated by the broad general meaning of the terms expressed in the scope of the patent application.

1,21,31‧‧‧core group

11,311‧‧‧ signal line

111, 2111, 3111‧‧‧ signal line conductor

112, 2112, 3112‧‧‧Insulation

12,212,312‧‧‧metal foil

13,213,313‧‧‧ Shield

14,214,314‧‧‧ sheath

2,3‧‧‧ Cable

22,32‧‧‧Fixed layer

23,34‧‧‧ outer shield

24,35‧‧‧ cable sets

211‧‧‧ signal line

33‧‧‧ external fixed layer

The first figure is a cross-sectional view of an embodiment of a core set. The second figure is a cross-sectional view of a first embodiment of the cable. The third figure is a cross-sectional view of a second embodiment of the cable. The fourth figure is an insertion loss test chart of an embodiment of the core group.

Claims (10)

A core group includes: a signal line, the signal line includes a signal line conductor and an insulating layer covering the signal line conductor; a metal foil, the metal foil coated signal line; a shielding layer, the shielding layer a sheathing metal foil; and a sheath covering the shielding layer; wherein the metal foil is spirally wound or longitudinally wrapped with the signal line, and the insertion loss test frequency of the core group is up to 40 GHz. The core group according to claim 1, wherein the two signal lines are housed in the metal foil in a parallel manner. The core set according to claim 1, wherein the two signal lines are stranded in the metal foil. The core set according to claim 1, wherein the signal line conductor is made of a silver plated copper conductor. The core set according to claim 1, wherein the shielding layer is woven outside the metal foil. The core group according to claim 1, wherein the shielding layer is wound around the metal foil. The core set according to claim 1, wherein the sheath is a PET tape. A cable comprising: a core set having the features of the core set according to any one of claims 1 to 7; a fixed layer, the fixed layer being coated on the core set An outer shielding layer, the outer shielding layer is wrapped on an outer side of the fixing layer; and a cable sleeve, the cable sleeve is wrapped on an outer side of the outer shielding layer; wherein, a pair of the core group The arrangement is stacked in a fixed layer, and the insertion loss test frequency of the cable is up to 40 GHz. The cable of claim 8, wherein the fixed layer and the outer shield layer comprise a set of annularly arranged core groups, and the outer shield layer and the annular array An outer fixed layer between the core groups. The cable of claim 8, wherein the outer shield is woven or wound around the outer side of the fixed layer.